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<h1>Parameters</h1>

<p>A parameter is a set of <code><a href="ocx_syntax.htm">&lt;PARAM&gt;</a></code> tags with <code>NAME</code> and <code>VALUE</code> attributes that specify a <a href="ocx_commands.htm">command</a> and information required by the command.</p>

<p>For example, when you specify the <b>Contents</b> command, you must also specify a contents (.hhc) file using the <b>Item1</b> parameter.</p>

<p>Some parameters are used with more than one command. For information about a specific instance of a parameter, see the command for which it is used.</p>


<h2>Parameters quick reference</h2>

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<li><a href=ocx_pbutton.htm>Button</a></li>

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<li><a href=ocx_pdefault_topic.htm>Default Topic</a></li>

<li><a href=ocx_pflags.htm>Flags</a></li>

<li><a href=ocx_pfont.htm>Font</a></li>

<li><a href=ocx_pframe.htm>Frame</a></li>

<li><a href=ocx_pitem.htm>Item</a></li>

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